This tutorial will help you create an iCloud account for Windows, Mac OS X, iPad, iPhone…
How To Open iCloud Account on Computer PC:

How to create a mail + account iCloud?

1) Register your Apple ID (Do not know what it is? Read here)
2) One of the devices iPad, iPhone, iPod. The fact is that the creation of e-mail comes from the settings menu of your gadget. Even with the Apple ID, go to the site management of cloud storage at www.icloud.com, when clicking on the icon «mail» see a sign that says that you must follow to configure the device. Return and go. Select the desired menu item. If you are here for the first time – introduce Apple ID. If not, move the slider in front of the Mail menu. In the resulting window, click create.

PC + Mac: Left to come up with a beautiful name and all – e-mail address registered! Password is your password from iCloud. Now you can check, receive, send emails using input from the computer to the mail address iСloud.com

The mobile device. To do this, click on the standard Mail app … and you can start working with email!